Perry chose to wear her support for Obama. The singer wore a white ballot dress in October while performing at the America Forward grassroots event in Las Vegas.

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Eva Longoria

Longoria has been one of the most active people in her support for Obama. Besides the PSAs she does, the actress has been traveling the country speaking at rallies and grassroots events in support of the president. On Thursday, she spoke at a grassroots rally in Las Vegas wearing a 2012 Obama campaign t-shirt.
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Scarlett Johansson

Johannson is a very vocal supporter of Obama. She spoke in September at the Democratic National Convention, along with Eva Longoria.
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The actress also showed her support for Obama's re-election in that star-studded PSA. When talking about a potential victory for Romney she said, "how am I supposed to present to my children the fact that my daughter may have, under a Republican administration, a different set of opportunities and obstacles than my son."
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Lena Dunham

The Girls star most recently voiced her support for Obama in her own PSA. How she presented her message raised a few eyebrows, but her point was to urge young people to vote, and make the vote for Obama.
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Tina Fey

Tina Fey recently endorsed Obama somewhat inadvertently on her show 30 Rock on Tuesday. Her character Liz Lemon, in true awkward Lemonish fashion, made a pitch at a Mitt Romney rally for Obama's re-election. She also spoke out against the Republican men that have publicly talked about rape.
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The singer and mommy of two hosted a fundraiser at her home in L.A. for the Obama campaign. The day was focused on families and included facepainting and balloon animals. The price of admission was $2,500 per person, according to US Weekly, and the First Lady herself was among the attendees.
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Elizabeth Banks

The Hunger Games star voiced her support for Obama in a rather candid interview she did for a PSA. She revealed that her big concern during this election was the possibility of Planned Parenthood disappearing if Romney were elected. During the interview she shared how the organization helped her get birth control for her migraines and, um, heavy flow, out of college when she had no health insurance. The example was a little awkward, but she got her point across.
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